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From Wikipedia:

Baro Urbigerus

Baro or Baru Urbigerus was a seventeenth-century writer on alchemy. He is known for his Aphorismi Urbigerani. This collection of 100 aphorisms claims to set out completely the theory of the alchemical work, the preparation of the Philosopher's Stone. A shorter collection of 31 aphorisms, contained in it, is known as the Circulatum Minus Urbigeranum... Read More

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